A quick and dirty gdb debug indicates it's looping with copy_file_range syscall(326)
$ grep copy /usr/include/asm/unistd_64.h #define __NR_copy_file_range 326 gdb --args /usr/sbin/xfs_io -i -f -c "copy_range -s 4000 -l 2000 /home/ubuntu/test/test-430/file" "/home/ubuntu/test/test-430/beyond" (gdb) catch syscall 326 Catchpoint 1 (syscall 326) (gdb) run Starting program: /usr/sbin/xfs_io -i -f -c copy_range\ -s\ 4000\ -l\ 2000\ /home/ubuntu/test/test-430/file /home/ubuntu/test/test-430/beyond [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [New Thread 0x7ffff7036700 (LWP 10450)] Thread 1 "xfs_io" hit Catchpoint 1 (call to syscall 326), syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 38 ../sysdeps/unix/sysv/linux/x86_64/syscall.S: No such file or directory. (gdb) continue Continuing. Thread 1 "xfs_io" hit Catchpoint 1 (returned from syscall 326), syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 38 in ../sysdeps/unix/sysv/linux/x86_64/syscall.S (gdb) continue Continuing. Thread 1 "xfs_io" hit Catchpoint 1 (call to syscall 326), syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 38 in ../sysdeps/unix/sysv/linux/x86_64/syscall.S (gdb) continue Continuing. Thread 1 "xfs_io" hit Catchpoint 1 (returned from syscall 326), syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 38 in ../sysdeps/unix/sysv/linux/x86_64/syscall.S (gdb) continue Continuing. Thread 1 "xfs_io" hit Catchpoint 1 (call to syscall 326), syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 38 in ../sysdeps/unix/sysv/linux/x86_64/syscall.S (gdb) continue Continuing. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1755999 Title: Reproducible hang in ext4 generic/430 with xfstest from upstream To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755999/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
